Hello together.
I have a Mikrotik Router on my company.
The second ip address range and default configuration on my LAN is: 192.168.253.0/24
The interface is in the bridge mode.
Now i want to configure other ip ranges in the same bridge interface like this: 192.168.249.0/24.
Is this possible to do that?
Thank you in advance.

Yes, this is no problem at all. Just add the address under IP->Address

Thank you, but why the ping command tell me request time out?

Of course there are other things to consider, e.g. the routing.
But when you ping from an address on this network to internet and you have not changed the default config,
it should work. Otherwise you need to show your config.

Hello My Friend.
Many thank you in advance for your help.
The communicating of two different LAN now is Establish and OK.
But i have one other problem.
If in some of computers i configure the range of IP Address manually 192.168.249.0/24 o have some problem with DNS configuration. Some web page is not accessed from our computer.
I don't know witch DNS i want to put.
Please see the file attachment for my IP Address List and DHCP-Server List.
My Domain Controller have the ip 192.168.253.200 and my router have the ip 192.168.253.254.
Thank you for your help.